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| Mirrors > Home > MPE Home > Th. List > eulerth | Structured version Visualization version GIF version | ||
| Description: Euler's theorem, a generalization of Fermat's little theorem. If 𝐴 and 𝑁 are coprime, then 𝐴↑ϕ(𝑁)≡1 (mod 𝑁). This is Metamath 100 proof #10. Also called Euler-Fermat theorem, see theorem 5.17 in [ApostolNT] p. 113. (Contributed by Mario Carneiro, 28-Feb-2014.) |
| Ref | Expression |
|---|---|
| eulerth | ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → ((𝐴↑(ϕ‘𝑁)) mod 𝑁) = (1 mod 𝑁)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | phicl 16686 | . . . . . . . 8 ⊢ (𝑁 ∈ ℕ → (ϕ‘𝑁) ∈ ℕ) | |
| 2 | 1 | nnnn0d 12448 | . . . . . . 7 ⊢ (𝑁 ∈ ℕ → (ϕ‘𝑁) ∈ ℕ0) |
| 3 | hashfz1 14259 | . . . . . . 7 ⊢ ((ϕ‘𝑁) ∈ ℕ0 → (♯‘(1...(ϕ‘𝑁))) = (ϕ‘𝑁)) | |
| 4 | 2, 3 | syl 17 | . . . . . 6 ⊢ (𝑁 ∈ ℕ → (♯‘(1...(ϕ‘𝑁))) = (ϕ‘𝑁)) |
| 5 | dfphi2 16691 | . . . . . 6 ⊢ (𝑁 ∈ ℕ → (ϕ‘𝑁) = (♯‘{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1})) | |
| 6 | 4, 5 | eqtrd 2766 | . . . . 5 ⊢ (𝑁 ∈ ℕ → (♯‘(1...(ϕ‘𝑁))) = (♯‘{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1})) |
| 7 | 6 | 3ad2ant1 1133 | . . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → (♯‘(1...(ϕ‘𝑁))) = (♯‘{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1})) |
| 8 | fzfi 13885 | . . . . 5 ⊢ (1...(ϕ‘𝑁)) ∈ Fin | |
| 9 | fzofi 13887 | . . . . . 6 ⊢ (0..^𝑁) ∈ Fin | |
| 10 | ssrab2 4029 | . . . . . 6 ⊢ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1} ⊆ (0..^𝑁) | |
| 11 | ssfi 9088 | . . . . . 6 ⊢ (((0..^𝑁) ∈ Fin ∧ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1} ⊆ (0..^𝑁)) → {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1} ∈ Fin) | |
| 12 | 9, 10, 11 | mp2an 692 | . . . . 5 ⊢ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1} ∈ Fin |
| 13 | hashen 14260 | . . . . 5 ⊢ (((1...(ϕ‘𝑁)) ∈ Fin ∧ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1} ∈ Fin) → ((♯‘(1...(ϕ‘𝑁))) = (♯‘{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) ↔ (1...(ϕ‘𝑁)) ≈ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1})) | |
| 14 | 8, 12, 13 | mp2an 692 | . . . 4 ⊢ ((♯‘(1...(ϕ‘𝑁))) = (♯‘{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) ↔ (1...(ϕ‘𝑁)) ≈ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) |
| 15 | 7, 14 | sylib 218 | . . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → (1...(ϕ‘𝑁)) ≈ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) |
| 16 | bren 8885 | . . 3 ⊢ ((1...(ϕ‘𝑁)) ≈ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1} ↔ ∃𝑓 𝑓:(1...(ϕ‘𝑁))–1-1-onto→{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) | |
| 17 | 15, 16 | sylib 218 | . 2 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → ∃𝑓 𝑓:(1...(ϕ‘𝑁))–1-1-onto→{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) |
| 18 | simpl 482 | . . 3 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) ∧ 𝑓:(1...(ϕ‘𝑁))–1-1-onto→{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) → (𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1)) | |
| 19 | oveq1 7359 | . . . . 5 ⊢ (𝑘 = 𝑦 → (𝑘 gcd 𝑁) = (𝑦 gcd 𝑁)) | |
| 20 | 19 | eqeq1d 2733 | . . . 4 ⊢ (𝑘 = 𝑦 → ((𝑘 gcd 𝑁) = 1 ↔ (𝑦 gcd 𝑁) = 1)) |
| 21 | 20 | cbvrabv 3405 | . . 3 ⊢ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1} = {𝑦 ∈ (0..^𝑁) ∣ (𝑦 gcd 𝑁) = 1} |
| 22 | eqid 2731 | . . 3 ⊢ (1...(ϕ‘𝑁)) = (1...(ϕ‘𝑁)) | |
| 23 | simpr 484 | . . 3 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) ∧ 𝑓:(1...(ϕ‘𝑁))–1-1-onto→{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) → 𝑓:(1...(ϕ‘𝑁))–1-1-onto→{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) | |
| 24 | fveq2 6828 | . . . . . 6 ⊢ (𝑘 = 𝑥 → (𝑓‘𝑘) = (𝑓‘𝑥)) | |
| 25 | 24 | oveq2d 7368 | . . . . 5 ⊢ (𝑘 = 𝑥 → (𝐴 · (𝑓‘𝑘)) = (𝐴 · (𝑓‘𝑥))) |
| 26 | 25 | oveq1d 7367 | . . . 4 ⊢ (𝑘 = 𝑥 → ((𝐴 · (𝑓‘𝑘)) mod 𝑁) = ((𝐴 · (𝑓‘𝑥)) mod 𝑁)) |
| 27 | 26 | cbvmptv 5197 | . . 3 ⊢ (𝑘 ∈ (1...(ϕ‘𝑁)) ↦ ((𝐴 · (𝑓‘𝑘)) mod 𝑁)) = (𝑥 ∈ (1...(ϕ‘𝑁)) ↦ ((𝐴 · (𝑓‘𝑥)) mod 𝑁)) |
| 28 | 18, 21, 22, 23, 27 | eulerthlem2 16699 | . 2 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) ∧ 𝑓:(1...(ϕ‘𝑁))–1-1-onto→{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) → ((𝐴↑(ϕ‘𝑁)) mod 𝑁) = (1 mod 𝑁)) |
| 29 | 17, 28 | exlimddv 1936 | 1 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → ((𝐴↑(ϕ‘𝑁)) mod 𝑁) = (1 mod 𝑁)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1086 = wceq 1541 ∃wex 1780 ∈ wcel 2111 {crab 3395 ⊆ wss 3897 class class class wbr 5093 ↦ cmpt 5174 –1-1-onto→wf1o 6486 ‘cfv 6487 (class class class)co 7352 ≈ cen 8872 Fincfn 8875 0cc0 11012 1c1 11013 · cmul 11017 ℕcn 12131 ℕ0cn0 12387 ℤcz 12474 ...cfz 13413 ..^cfzo 13560 mod cmo 13779 ↑cexp 13974 ♯chash 14243 gcd cgcd 16411 ϕcphi 16681 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-rep 5219 ax-sep 5236 ax-nul 5246 ax-pow 5305 ax-pr 5372 ax-un 7674 ax-cnex 11068 ax-resscn 11069 ax-1cn 11070 ax-icn 11071 ax-addcl 11072 ax-addrcl 11073 ax-mulcl 11074 ax-mulrcl 11075 ax-mulcom 11076 ax-addass 11077 ax-mulass 11078 ax-distr 11079 ax-i2m1 11080 ax-1ne0 11081 ax-1rid 11082 ax-rnegex 11083 ax-rrecex 11084 ax-cnre 11085 ax-pre-lttri 11086 ax-pre-lttrn 11087 ax-pre-ltadd 11088 ax-pre-mulgt0 11089 ax-pre-sup 11090 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-nel 3033 df-ral 3048 df-rex 3057 df-rmo 3346 df-reu 3347 df-rab 3396 df-v 3438 df-sbc 3737 df-csb 3846 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-pss 3917 df-nul 4283 df-if 4475 df-pw 4551 df-sn 4576 df-pr 4578 df-op 4582 df-uni 4859 df-int 4898 df-iun 4943 df-br 5094 df-opab 5156 df-mpt 5175 df-tr 5201 df-id 5514 df-eprel 5519 df-po 5527 df-so 5528 df-fr 5572 df-we 5574 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-pred 6254 df-ord 6315 df-on 6316 df-lim 6317 df-suc 6318 df-iota 6443 df-fun 6489 df-fn 6490 df-f 6491 df-f1 6492 df-fo 6493 df-f1o 6494 df-fv 6495 df-riota 7309 df-ov 7355 df-oprab 7356 df-mpo 7357 df-om 7803 df-1st 7927 df-2nd 7928 df-frecs 8217 df-wrecs 8248 df-recs 8297 df-rdg 8335 df-1o 8391 df-oadd 8395 df-er 8628 df-en 8876 df-dom 8877 df-sdom 8878 df-fin 8879 df-sup 9332 df-inf 9333 df-card 9838 df-pnf 11154 df-mnf 11155 df-xr 11156 df-ltxr 11157 df-le 11158 df-sub 11352 df-neg 11353 df-div 11781 df-nn 12132 df-2 12194 df-3 12195 df-n0 12388 df-xnn0 12461 df-z 12475 df-uz 12739 df-rp 12897 df-fz 13414 df-fzo 13561 df-fl 13702 df-mod 13780 df-seq 13915 df-exp 13975 df-hash 14244 df-cj 15012 df-re 15013 df-im 15014 df-sqrt 15148 df-abs 15149 df-dvds 16170 df-gcd 16412 df-phi 16683 |
| This theorem is referenced by: fermltl 16701 prmdiv 16702 odzcllem 16710 odzphi 16714 vfermltl 16719 lgslem1 27241 lgsqrlem2 27291 |
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